Turning device for forging-machines.



S. B. HEPPENSTALL.

TURNING DEVICE FOR PORGING MACHINES.

APPLIOATION FILED NOV. 25, 1912.

1,'74,868, Patented Oct. 7, 1913.

FFIQ.

SAMUEL B. I-IEPPENSTALL, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOB 'IO UNITED ENGINEERING & FOUNDRY (30., OF PITTSBURGH, PENNSYLVANIA, A GOEFDBATIQN OF FENINSYLVANIA.

Specification of Letters Patent.

Patented Get. *7, 1913.

Application filed November 25, 1912. Serial No. 733,403.

To all whom, it may concern Be it known that I, SAMUEL B. HEPPEN- STALL, a citizen of the United States, and resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Turning Devices for Forging-Machines; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to a device for manipulating forgings or other objects.

The object of my invention is to provide a simple and efficient device by means of which a forging may be manipulated or turned the proper amount between forging operations so as to present the proper face to the action of the dies of the forging press or hammer.

The device is intended to operate in connection with the chain which supports the forging during the forging operation and my improved device is adapted to engage the chain in such a way that when an upward pull is applied to the device the supporting chain is moved on its sheave in such a way as to turn the forging supported therein, all as fully hereinafter set forth and claimed.

In the accompanying drawing Figure 1 shows my invention as applied to a supporting chain; Fig. 2 is an enlarged vlew of a portion of the chain with my inventionapplied thereto; Fig. 8 is a view taken at r ght angles to that shown in Fig. 2; and Fig. 4: is a cross section on the line 44 Fig. 2.

In the drawing the numeral 2 designates a portion of an electric or like crane, and 3 the cable which is connected to the hoisting apparatus carried by the crane, said cable passing around the sheave a. The sheave f1 carries the hook 5 which supports the ordinary spring frame 6 carrying the sheave 7. The chain 8 passes around the sheave 7 and said chain is adapted to support the outer end of the forging 9, while said forging 1s being operated on by a sultable forging press or hammer. The U-shaped members 10 and 11 are pivotally connected, the member 11 having the trunnions 12 which are flattened at opposite sides as at 13 and sald trunnions engage the openings 14: in the member 10. The member 10 is cut away as at 15 and the trunnions are inserted through the opening 14 and then the section turned to bring the trunnions into the position indicated in Fig. 2 to hold the parts together. These sections 10 and 11 surround the chain 8, as clearly indicated in Fig. 4:, and are adapted to move up and down over said chain. The sections '10 and 11 are provided with the lugs 16 to which the chains 17 are attached, the upper ends of said chains being connected to the equalizer bar or other suitable support 18 carried by the spring frame 19.

Bolted or otherwise secured to the sections '10 and 11 are the dogs 20 which are adapted to engage the links of the chain as indicated in Fig. 2, and in order to provide for the engagement of said dogs with the curved ends of the links of the chain 8 said dogs are slightly recessed as at 21. The cable 22 passes around the sheave 23 which carries the hook 24 connecting up with the eyelet 25 in the spring frame 19. The cable 22 passes up to the auxiliary hoist on the crane 2.

When the device is in operation the operator on the crane from his cab controls the movement of the cable 22 and when the forg ing 9 is to be turned a quarter or an eighth, as the case may be, the operator operates the auxiliary hoist and the chain 8 is moved, due to the engagement of the dogs 20 therewith. When the forging has been turned the re quired amount the operator slacks up on the cable 22 and the lowering of said chain causes the dogs 20 to release their hold from the chain 8 and said dogs will assume the position shown in dotted lines Fig. 2 due to the movement of the sections 10 and 11 upon their pivotal point. In this way the device slips down over the chain 8 in the manner of a pawl and ratchet ready to take a new grip on said chain as soon as the slack in the cable 22 is taken up by the operator. The device is then in position to operate in the manner before described as soon as the operator raises the cable 22 to shift the forging the required amount. In this way it is apparent that a simple and eflicient device is provided which will operate without fail and by means of which the operator can accurately turn the forging the required amount and the device is automatically released so that a fresh grip is obtained at a point lower down on the chain 8 after each operation. The spring frame 19 allows for the necessary give of the chains 17 due to the reduction in the size of the forging by the forging compression and the strain on the chains is thereby relieved. In case the dogs 20 become worn they may be readily removed and replaced by new ones.

What I claim is:

1. In a manipulating device for forgings and like objects, the combination with a suitable support, of an endless chain carried thereby for supporting'the forging, a gripping member adapted to engage said chain, and means for raising said gripping member.

2. In a device for manipulating forgings and like objects, the combination with a suitable support, of an endless chain carried thereby for supporting the forging, and agripping member adapted to engage the chain when lifted, and released by gravity when lowered.

3. In a device for manipulatingfor'ging s or like objects, the combination with a suit- Y able support, of an endless chain carried 1 thereby for supporting the forging, a gripping member engaging said chain comprising pivotally mounted sections, dogs carried by said sectlons, a l fting device, and flexlble connections between said sections and said I lifting device.

l. In a device for manipulating forgings or like objects, the combination with a suitable support, of an endless chain carried thereby for supporting the forging, a gripping device comprising pivotally connected U-shaped sections surrounding sald chain,

dogs carried by said sections, chains connected to said sections, a support to which said chains are connected, alifting device, and yielding connections between said last named support and said lifting device. In testimony whereof,,I, the said SAMUEL B. HEPPENSTALL, have hereunto set my hand.-

SAMUEL' B. HEPPENSTALL;

Witnesses:

ROBERT C. To'rTnN,

' JOHN F. WILL.

co ies or this patent ma be obtained for five cents each, by addressing the eemniissienr of Patents,-

' Washington, I). G. 

